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[Qemu-devel] Assertion bus->irq_count[i] == 0 in Qemu 2.9.0


From: Peter Lieven
Subject: [Qemu-devel] Assertion bus->irq_count[i] == 0 in Qemu 2.9.0
Date: Tue, 19 Jun 2018 11:41:35 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0

Hi,


ich habe some hosts running rather old Qemu Versions which sometimes show the 
following behaviour:


1) Live Migration

2) One Network Interface (virtio-net) stops forwarding traffic.

3) If I reboot the server I hit the following assertion

qemu-2.9.0: hw/pci/pci.c:311: pcibus_reset: Assertion `bus->irq_count[i] == 0' 
failed.


Does anybody remember this kind of error? Is this something that has already 
been fixed?


The patch:

commit 3936161f1fd72d1dfa577aaba910819c5e873260
Author: Herongguang (Stephen) <address@hidden>
Date:   Tue Apr 25 10:29:54 2017 +0800

    pci: deassert intx when pci device unrealize

    If a pci device is not reset by VM (by writing into config space)
    and unplugged by VM, after that when VM reboots, qemu may assert:
    pcibus_reset: Assertion `bus->irq_count[i] == 0' failed


Is applied to our 2.9.0 tree.


Thanks,

Peter






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